This mini product measure your pedaling cadence or speed as you ride with it. Supported by BT 4.0LE and by ANT+ wireless technology, it can connect to your smartphones, or bike computers. The item installs on the crank arms of any size and counts the pedals per minute. It can also install on the rear or front hub to monitor the pedaling speed. With straps and sleeves provided, it can install easily with no need of extra tools.

Features:For BT 4.0LE and FOR ANT+ TECHNOLOGY: To track your pedaling cadence or speed with this item for BT 4.0LE and for ANT+ wireless technology simultaneously or asynchronously connected to compatible smartphones or bike computers.DUAL PURPOSE：Reset the battery to switch modes, when the light turns red, it means you can track your pedals in cadence sensor mode, while it turns green, you can track your pedaling speed.UPWARD-COMPATIBILITY: for Android 4.3, for IOS 7.0. Support for BT 4.0LE and for ANT+ device （for Garmin or for Byton bike computers）simultaneously or asynchronously connected. SUPPORTED APP: for SREAVA, for ZWIFT, for BKOOL, for TACX, and other biking APPs conforming to BT 4.0LE protocol, for Garmin and for Byton with ANT+ protocol.EASY INSTALLATION: with elastic straps and sleeves provided, it can be installed easily onto the crank arm or the rear or front hub. Simply attach the sensor and ride. With no magnets or other exposed parts to line up, this sensor is easy to install, maintain and move between bikes.